Beaver manages to get by while being perennially broke by taking advantage of gentlemanly customs like buying your mate a drink and charging things to a long-running tab. When confronted with his fiscal shortcomings, he awkwardly tries to play them off. Jock was benevolent in going over to join Beaver, but he couldn’t resist making him squirm by obliging Beaver to buy him a drink in return, and sharing a laugh about it afterward with the other club members.